Research on I/Q phase demodulation algorithm for synthetic wavelength ranging based on optical frequency comb
2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)(2021)
Abstract
This paper introduces the precise phase extraction of synthetic wavelength ranging based on optical frequency comb by using I/Q (In-phase/Quadrature) demodulation algorithm. A synthetic wavelength ranging system of optical frequency comb has been built. The real-time phase detection of 101.4 MHz signal and its harmonic 11.3 GHz signal is realized by the modulated high-speed photodetector using the optical frequency comb. The measure error of the mean is under 10µm within the range of 42 m is obtained.
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Key words
I/Q phase demodulation algorithm,optical frequency comb,synthetic wavelength ranging
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